France Telecom

France Telecom Etablissement Autonome De Droit Public (centre National

Francoise Vallee

Jean-Claude Pailles

Patrick Remery

Philippe Michon

Eric Hannecart

An electronic system for payment via a telecommunications network between firstly a vendor having a server suitable for implementing a secure protocol for payment by smart card, and secondly a client having navigation and electronic payment means suitable for making a payment to said vendor using client software for handling payment that includes the secure payment protocol. The client software for handling payment is installed on a payment server on the telecommunications network. The system comprises, at the client end, navigation means, electronic payment means constituted by a mobile terminal connected to the network and including a reader for reading payment smart cards, and means for redirecting messages suitable for transmitting at least the call number of the mobile terminal to the payment server.

Electronic payment system through a telecommunication network

A process for exchange of rights between microprocessor cards, wherein multiple keys (K1, K2, . . . ) and varied keys (Ka5, Kb3) are used. A card to be debited calculates a voucher with varied key (Ka5) that the card to be credited reconstitutes. The process has application to electronic payment.

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Lantheuil, France

Francoise Vallee